this resonates with me - i've spent a greater part of the last decade moving from interest to interest. what has helped me is to draw lessons and generalizations from my experience. this is what got me started on schemas in programming languages, instead of feeling like i'm learning yet another language, each language adds to my larger understanding of what a language is its extremely hard in a world of +7 billion people to go really deep into something and be the best at that. but being the best at an intersection of multiple things is very doable (eg. note-taking, taxonomies and programming) tldr: the mindset i try to use is learning - as long as I can learn from the experience and have a way to reference it, then its okay